// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/test/gtest_util.h"

#include <stddef.h>

#include <memory>

#include "base/files/file_path.h"
#include "base/json/json_file_value_serializer.h"
#include "base/values.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace base {

TestIdentifier::TestIdentifier()
{
}

TestIdentifier::TestIdentifier(const TestIdentifier& other) = default;

std::string FormatFullTestName(const std::string& test_case_name,
    const std::string& test_name)
{
    return test_case_name + "." + test_name;
}

std::vector<TestIdentifier> GetCompiledInTests()
{
    testing::UnitTest* const unit_test = testing::UnitTest::GetInstance();

    std::vector<TestIdentifier> tests;
    for (int i = 0; i < unit_test->total_test_case_count(); ++i) {
        const testing::TestCase* test_case = unit_test->GetTestCase(i);
        for (int j = 0; j < test_case->total_test_count(); ++j) {
            const testing::TestInfo* test_info = test_case->GetTestInfo(j);
            TestIdentifier test_data;
            test_data.test_case_name = test_case->name();
            test_data.test_name = test_info->name();
            test_data.file = test_info->file();
            test_data.line = test_info->line();
            tests.push_back(test_data);
        }
    }
    return tests;
}

bool WriteCompiledInTestsToFile(const FilePath& path)
{
    std::vector<TestIdentifier> tests(GetCompiledInTests());

    ListValue root;
    for (size_t i = 0; i < tests.size(); ++i) {
        std::unique_ptr<class base::DictionaryValue> test_info(new DictionaryValue);
        test_info->SetString("test_case_name", tests[i].test_case_name);
        test_info->SetString("test_name", tests[i].test_name);
        test_info->SetString("file", tests[i].file);
        test_info->SetInteger("line", tests[i].line);
        root.Append(std::move(test_info));
    }

    JSONFileValueSerializer serializer(path);
    return serializer.Serialize(root);
}

bool ReadTestNamesFromFile(const FilePath& path,
    std::vector<TestIdentifier>* output)
{
    JSONFileValueDeserializer deserializer(path);
    int error_code = 0;
    std::string error_message;
    std::unique_ptr<base::Value> value = deserializer.Deserialize(&error_code, &error_message);
    if (!value.get())
        return false;

    base::ListValue* tests = nullptr;
    if (!value->GetAsList(&tests))
        return false;

    std::vector<base::TestIdentifier> result;
    for (base::ListValue::iterator i = tests->begin(); i != tests->end(); ++i) {
        base::DictionaryValue* test = nullptr;
        if (!(*i)->GetAsDictionary(&test))
            return false;

        TestIdentifier test_data;

        if (!test->GetStringASCII("test_case_name", &test_data.test_case_name))
            return false;

        if (!test->GetStringASCII("test_name", &test_data.test_name))
            return false;

        if (!test->GetStringASCII("file", &test_data.file))
            return false;

        if (!test->GetInteger("line", &test_data.line))
            return false;

        result.push_back(test_data);
    }

    output->swap(result);
    return true;
}

} // namespace base
